Free shipping / No Sales Tax. We'll beat any price! 100% Satisfaction Guarantee. 30 Day Return Policy. Moog Etherwave& Theremin Kit The build-it-yourself kit has an unfinished wood cabinet and pre-built circuit board. Several wiring points require soldering. Power supply is included. All Etherwaves ship with a DVD containing two video tutorials: Clara Rockmore: the Greatest Theremin Virtuosa, and Mastering the Theremin, featuring Lydia Kavina.